Movable bracket for flying scaffolding



June 1 1926.

- 1,587,238 A. MINZONI MOVABLE BRACKET FOR FLYING SCAF'FOLDfNG g. 8 WINKus I Wit E F ill Patented June 1, 1926.

15%],238 Fl CE.

ALFONZO MIHZONI, OF BOLOGNA, ITALY.

MOVABLE BRACKET FOE FLYING SGAFFOLDING.

Application filed February 2, 1925, Serial No. 6,386, and in Italy July16, 1924.

This invention relates to a movable bracket which is particularlyadapted for use in connection with scaffolding for repairing, decoratingor other Work outside buildings of all kinds. One of the chief objectsof this invention is to provide grappling or anchora means oil aparticular construction that 1 be secured to the wall without anymasonry work and are easily detachable therefrom.

To this purpose I provide in the wall conical recesses having theirlarger ends turned inwards and I arrange therein anchoring platesprovided with a conical claw head. The bracket carries hooks engaging inthe anchoring plate and is provided with a supporting ange litting in arecess in the wall.

When it is desirable to limit as mucn as possible the number of recessesin the wall, l adopt a modified form of my invention wherein a series ofuprights are anchored at their upper parts in the wall, the bracketsbeing secured thereto by means of books.

The annexed drawing shows by way of example two constructional forms ofmy inveution.

Fig. 1 shows the bracket applied directly to awall.

Fig. 2 is a perspective view of the anchoring plate.

Fig. 3 shows the tool used for giving a conical form to the anchoragehole. Fig. 1 shows a modified form of Fig. 1.

Referring to the drawings, 1 is the wall in wuich a cylindrical hole isobtained in any suitable manner and is subsequently made conical bymeans of the tool shown in Fig. 3, said tool being constituted by twoblades of trapezoidal profile, pivoted on a piece 4; a block 6 isarranged slidably between said blades 3 and is operated by a screw whichadvancing towards the end of said blades "torces them apart.

Said tool is introduced into the hole in the wall and during itsrotation the block ('3 is gradually brought forward, so that the holewill acquire a V shaped form.

In the said hole I arrange a claw head, as shown in Fig. 2, consistingof two arms 7 secured to a bridge 8 and enclosing a block 9 that can bedisplaced by means of a screw 10.

When the claw head is fitted in the hole, its arms are caused to divergeby means of the screw 10, as it has been described with regard to thetool, until they bear against the walls of the hole, from which they canbe withdrawn only by loosening the screw 10.

The bridge 8 is provided with a slot 11, in which the bracket suspensionhook engaged.

The bracket is constituted by an angle iron 12 bent at a right angle (orby two joined irons) reinforced by a supportii'ig oar 13 also of angleiron and a ferrule 14: of suit able flatiron secured thereto by means ofbolts.

The bracket is provided on its front side with an upright 15 carrying atits upper part a fork 16 supporting a wooden cross bar serving as handrail.

The rear part of the bracket is provided with a strong hook 17 engaginginto a slot 11 of the bridge 8.

At the lower part of the bracket is toi'n'ied a flange 18 entering acorresponding recess provided in the wall.

'When a number of brackets is applied and the work must be carried on onbuildings of particular artistic value or when for any reason care mustbe taken to make the smallest possible number of holes in the wall, itwill be convenient to use the arrangement shown in Fig. 4:.

According to this arrangement, the hook 17 of the bracket instead ofengaging into the slot 11, will engage in slot 19 provided in upright 20resting on the ground or anchored at its upper part to the building,either by means of an anchoring plate as described or in any othersuitable way.

The slots 18 may also be replaced by clai'nping means fixed ordetachably mounted on the uprights in such a way as not to weaken thelatter.

hat I claim is:

1. In a scaffold, the combination with a wall anchor having expandingmembers for gripping within a recess in a wall, and a screw means forexpanding said members, of means associated with said-anchor to permitthe suspension of a supporting bracket independent of said screw means,whereby the expanding means of the anchor may be adjusted while thebracket is supported thereby.

In a scafiold, the combination with a supporting bracket, a wall anchorhaving eX- panding members for gripping within a reccss in a wall, and ascrew means for actuating said members, of a Slotted member assoeiatedwith .said anchor adapted to snpptrt hook at its upper end, and asupport for 10 the bracket and permit the screw means to said bracketconnected to the anchor and be actuated While the bracket is su'ppoitedhaving a slot to receive said hook wherehv by the slotted member. thescrew means may be actuated While the 3. In a scaffold, the combinationwith a bracket is supported by the anchor. wall anchor having expandingmembers for In testimony that I claim the foregoing as grippiing Withina recess in a wall, and :1 my iHV11tiOD IhflVG signed my name. screwmeans for expanc ting said members, of

a brackethaving an upright formed with a ALFONSO MINZOJI.

